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Low‐temperature photoluminescence from CdTe grown by hot‐wall epitaxy on GaAs

 

作者: K. Lischka,   T. Schmidt,   A. Pesek,   H. Sitter,  

 

期刊: Applied Physics Letters  (AIP Available online 1989)
卷期: Volume 55, issue 12  

页码: 1220-1222

 

ISSN:0003-6951

 

年代: 1989

 

DOI:10.1063/1.101660

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The low‐temperature near‐band‐edge photoluminescence of thick (d≊36 &mgr;m) (100)CdTe epilayers grown on (100)GaAs substrates is investigated. Besides a dominating bound exciton emission, evidence for free‐exciton emission (n=1 and 2) and two electron transitions (TETs) of donor‐bound excitons is found. The defect involved in the TET is most likely a gallium‐related donor. This is concluded from the TET line wavelength adopting recent bulk CdTe TET data. A new emission line at 781.4 nm (1586.7 meV) is observed. It is tentatively assigned to a TET of a free exciton.

 

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